Gas heater



ug, 2, 1932. G MCFADDEN 1,869,73

GAS HEATER Filed May 19, 1951 5 Sheets-Sheet l Aug. 2, 1932.

G. H. MGFADDEN GAS. HEATER Filed Maly 19, 1931 5 Sheets-Sheet 3 cut-outportio-n in the base plate Patented Aug. z, 1932 UNITED sTAEs GEORGE H.IIICEAIDDEN,` OF STEU'BENVILLE, OHIO, ASSIGNOR T'OTI-IE OHIO FOUITDRYVAmrENT OFFICE MANUFACTURING COMPANY, OF STEUBENVILLE, OHIO, ACORPORATION ,OF .OHIO

GAS HEATER Application ined May i9, i931. .serial no. 538,436,

My invention relates'to gas heaters and more particularly to those ofthe radiant type wherein refractory clay elements suchV as burner tubesor radiants are employed for eiecting sui'icient combustion of the fueland radiation of the heat produced thereby.

One obj ect of my invention is to provide a heater of the type referredto wherein the usual heavy clay backwall is not required.

Another object ofmy invention is toprovde a struct-ure that is ofsimpleform, and of much lighter weight than various types of heatersheretofore employed.

Still another object of inyvinvention is to provide a heater ofgenerally simplied and improved form.

As shownin the accompanying drawings, Figure 1 is a face view of theheater with some of the elements removed; Fig.2 is an end elevationalview thereof; Fig. 3 is a sectional plan viewof the heater; Fig. 4 is aview, on an enlarged scale, taken on the line )lV-#IV of Fig. l, andFig. 5 shows a modification. i

The heater comprises a metal frame for supporting the burner andthe claytubes or radiants and the artificial fuel, and includes a metal baseplate 6 to the rear cornersof which legs 7 are secured by bolts orscrews extending vertically through the corners of the base plate intothe legs. The base plate at its forward edge has depending lugs 8through which bolts 9 extend for the purpose of retaining a hearth plateor face plate 10 in place. f .Y

Front legs 11 are secured to the hearth plate 10 by means of bolts orscrews 12, these legs being provided with ribbed or shouldered portionslwnich abutagainst the bottom edge of the hearth plate, andv thel legsare thereby held against pivotal or swinging movement about ltheirattachingbolts 12.

A burner 14 is secured at its ends tothe base plate by means of screws15. Gras is supplied to the burner from a suitable source through avalve 16, and the burner is provided with a series of burner openings 17which are disposed opposite to an elongated 6, as shown more clearly inFig. 3.

End plates18 are secured to the base plate by means of bolts 19 whichextend through horizontally-extending ears formed on the bottom edgesofthe end plates. the forward and upper edges of the end plates `arebent outwardly'to form flanges 21 for the purpose short `'heightvrelative to the end plates, leav-v .ing a large open space between theend plates,

as'shown more clearly in Figs. 2 and 4.' tAn' intermediate back plate orpartition plate 2T' of sheet metal or other suitable material, isdisposed between the end plates, and has its bottom edge flanged asshown at 28, whereby it is Lattached to lthe bottom plate 6 vby suitablebolts. The plate 27 is recessed or stepped as shown at 29, for thereception of refractory clay blocks 3l, and at its upper edge, theplateis cut out as indicated at 32, to leave passage space between it and theupper backplate 24 for heated air, which will circulate upwardlyy alongthe rear face ofthe plate 27 and pass through the open ing at 32. Thereis therefore less tendency for the plate 27 to vbecome overheated, andthe use of a heavy metal plate, or a refractory back wall is thereforelnot necessary.

Radiant or burner tubes 34, preferably of clay, and formed fon theirfaces with proturberances 35 that simulate fuel such vas coal aresupported at their lower ends between ribs 37 that are formed on thebase plate 6 adjacent to the elongated burner opening vthrough the 'saidplate. The tubes 34 have The burner tubes. 34V are disposed mainly.

inistraight lines and attheir upper ends are bevelled. The clayV blocks31 seat at their forward edges against the rear bevelled walls of thetubes, and loose lumps 38 of clay or other material simulating fuel areplaced against the upper ends of the tubes 34, and

5 distributed over the blocks 3l,`and the rear shelf-like port-ion ofthe plate 2?.

The blocks 31 are provided with radiating projections corresponding tothe projections 36 to produce a glowing effect on the lumps 0 of fuelsupported thereby. The members 3l could be made integrally with oneanother, but I prefer to form them in sections, because if one becomesbroken, it can be replaced without the necessity of replacing the.

M other blocks 3l, and without the necessity of disturbing more Ythan afew lumps of fuel incase the breakage occurs when the block is in use.The bar 23 vsupports the upper ends of the radiants 34 from tiltingoutwardly, and may also serve to assist in maintaining the artificialfuel 38 in place.

' Referring to F ig. 5, I show a vertical tube 34a that corresponds tothe tube 34, and an inclined tube 40 that is lformed similarly to ,g5the tubes 34 and 34a, and constitutes a. continuation of the tube 34a'.Loose fuel 38a may be piled on the tubes 40 to increase the simulationlof a coal lire'. The tubes 40 are supported'by the louter ends of thetubes 04a 30 and by a sheet metal plate 27a which is cut away at 32a ina manner similarto the upper edge of the plate 27, to provide forcirculation of air behind the plate 27a, The heater structure isotherwise substantially as in Figs. l'to 4.

I Yclaim as my invention 1, Heater structure comprising aframeworkhaving a back plate and an intermediate plate disposed between the backplate in and the front side of the heater, the intermediate plateextending from one'end of the heater, the intermediate yplate extendingfrom one end of the heater toward the other end adjacent to thelongitudinal medial line thereof, and extending upwardly and rearwardlyto the back plate, a burner disposed forwardly of the intermediateplate, and radiating elements disposed above the burner and inproximityto the forward side and so top sides of the intermediate plate, apassageway for air being provided between the uppermost edge of theintermediate plate and the back plate, and the space below the bottomedge of the back plate, being unobstructed to permit circulation of airupwardly along the rear face of the intermediate plate.

2. A gas heater comprising a framework having a base plate, end walls, aback plate,

"il an intermediate plate disposed between the end walls and extendingupwardly and then rearwardly from the base plate to the back plate,burner tubes supportedY on the base plate at the front side of theintermediate 05 plate, and artificial fuel elements supported on therearwardly extending portion of the intermediate plate and against theupper ends of the said tubes.

3. A gas heater comprising a framework havinCr a base plate, end walls,a back plate, an intermediate plate disposed between the end walls andextending upwardly and then rearwardly from the base plate to the backplate, burner tubes supported on the, base plate at the front side oftheintermediate plate, radiant blocks supported upon the rearwardlyextending portion of the intermediate plate with their forward edges inabutting engagement with the upper ends of the tubes,

and means for directing gases of combustion from said tubes across saidblocks.

4. A gas heater comprising a framework having a base plate, end walls, aback plate, an intermediate plate disposed between the end walls andextending upwardly and then rearwardly from the base plate to the backplate, a burner tube supported on the base plate at the front side ofthe intermediate plate, a radiant block supported upon therearwardly-exten'ding portion of the intermediate plate with its forwardedge in abutting engagement with the upper end of the tube, and meansfordirecting gases of combustion 'from said tube across said block.

5. A gas heater comprising a framework having an intermediate platelocated between the front and rear sides of the framework, the saidplate extending upwardly and then rearwardly, the forward part of therearwardly-extending portion being offset downwardly for the'receptionof a radiant block with its upper surface in substantial alinementwith'the rear portion of the plate, and a burner tube disposed below theforward edge of said block, the block and Vthe upper rear portion' ofthe plate being adapted to support artificial fuel.

6. A gas heater comprising a framework having an intermediate platelocated between the front and rear sides of the framework, the saidplate extending upwardly and'then rearwardly, Vthe forward part of therearwardly-extending portion being offset downwardly for the receptionof a radiant block with its upper surface in substantial alinementA withtherear'portion of the plate, a burner tube disposed below the forwardedge 'of said block, the block and the upper portion of the plate beingadapted to support artificial fuel, and means for permitting circulationof air through the framework and upwardly along the rear side of thesaid intermediate plate. j

I-n testimony whereof I, thesa-id GEORGE II. MCFADDEN have hereunto setmy hand.

GEORGE l-l. MGFADDEN.

